ECG -- Name that rhythm!

Ventricular rate/rhythm - 55 to 94 bpm/irregular Atrial rate/rhythm - Unable to determine PR interval - Unable to determine QRS duration - 0.10 sec Identification - Atrial fibrillation (controlled)

These rhythm strips are from a 78-year-old man complaining of shortness of breath. He has a history of COPD, coronary artery disease, and hypertension.

Ventricular rate/rhythm - 130 bpm/regular Atrial rate/rhythm - 130 bpm/regular PR interval - 0.14 to 0.16 sec QRS duration - 0.06 to 0.08 sec Identification - Sinus tachycardia

This rhythm strip is from a 1-month-old infant after a 3-minute seizure.

Ventricular rate/rhythm - 214 bpm/regular Atrial rate/rhythm - Unable to determine PR interval - Unable to determine QRS duration - 0.08 sec Identification - Supraventricular tachycardia

This rhythm strip is from a 43-year-old woman complaining of palpitations.

Ventricular rate/rhythm - 75 bpm/regular Atrial rate/rhythm - 75 bpm/regular PR interval - 0.14 sec QRS duration - 0.06 to 0.08 sec Identification - Sinus rhythm with ST-segment depression

This rhythm strip is from a 52-year-old man with substernal chest pain. He has a history of COPD and mitral valve regurgitation. Blood pressure: 140/78.

Ventricular rate/rhythm - 58 bpm/regular Atrial rate/rhythm - 58 bpm/regular PR interval - 0.20 sec QRS duration - 0.08 sec Identification - Sinus bradycardia

This rhythm strip is from a 54-year-old man who had a syncopal episode.

Ventricular rate/rhythm - 68 to 88 bpm/irregular Atrial rate/rhythm - 68 to 88 bpm/irregular PR interval - 0.12 sec QRS duration - 0.08 sec Identification - Sinus arrhythmia

This rhythm strip is from a 6-year-old boy immediately after a seizure.

Ventricular rate/rhythm - 167 bpm/regular Atrial rate/rhythm - Unable to determine PR interval - Unable to determine QRS duration - 0.06 sec Identification - Narrow-QRS tachycardia (SVT) with ST-segment depression

This rhythm strip is from a 62-year-old woman complaining of chest pain. Her blood pressure is 146/104, respirations are 20. Breath sounds are clear.

Ventricular rate/rhythm - 107 bpm (sinus beats)/ Regular except for the events Atrial rate/rhythm - 107 bpm (sinus beats)/ Regular except for the events PR interval - 0.20 sec (sinus beats) QRS duration - 0.08 sec (sinus beats) Identification - Sinus tachycardia with uniform PVCs

This rhythm strip is from a 69-year-old man complaining of shortness of breath. Lung sounds reveal bilateral rales. Blood pressure: 160/58.

Ventricular rate/rhythm - 107 to 200 bpm/irregular Atrial rate/rhythm - Unable to determine PR interval - Unable to determine QRS duration - 0.06 to 0.08 sec Identification - Atrial fibrillation (uncontrolled)

This rhythm strip is from a 77-year-old woman with a congested cough.

Ventricular rate/rhythm - 115 bpm/regular Atrial rate/rhythm - 115 bpm/regular PR interval - 0.18 sec QRS duration - 0.06 sec Identification - Sinus tachycardia

This rhythm strip is from an 82-year-old woman with vomiting x 2 days.

Ventricular rate/rhythm - 79 bpm/regular Atrial rate/rhythm - Unable to determine PR interval - Unable to determine QRS duration - 0.08 sec Identification - Atrial fibrillation (controlled)

This rhythm strip is from an 83-year-old man complaining of chest pain. He had a new pacemaker implanted 5 days ago. His blood pressure is 148/60.

Ventricular rate/rhythm - 60 bpm/regular Atrial rate/rhythm - 60 bpm/regular PR interval - 0.20 sec QRS duration - 0.06 sec Identification - Sinus rhythm

This rhythm strip is from an 86-year-old woman complaining of chest pain that she rates a 4 on a scale of 0 to 10. Blood pressure: 142/72.

Ventricular rate/rhythm - 68 to 125 bpm/irregular Atrial rate/rhythm - Unable to determine PR interval - Unable to determine QRS duration - 0.08 sec Identification - Atrial fibrillation

This rhythm strip is from an 88-year-old woman complaining of hip pain after a fall injury.